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ID = 15321
United States of America (USA)
Tube type:  Transmitting Triode, air cooled   Power/Output 
Identical to 211C
Similar Tubes
Normally replaceable-slightly different:
  211 ; 211B ; 4242A ; CV25 ; FP-285 ; HF130
Other characteristic (electr. data):
  311CH ; HD211C
Different connections:
Multiple differences or of other kind:

Base Jumbo 4-pin bayonet (1918) (Codex=Byy)
Was used by Transmittertube (Radio)
Filament Vf 10 Volts / If 3.2 Ampere / Direct / Specified voltage AC/DC

Thoriated-tungsten filament, convection cooled. 75W typical, 100W max plate dissipation; mu 12; 10MHz full power ratings, up to 30MHz operation with reduced ratings. Amperex version was rated at 120 watts.
4-pin bayonet jumbo base.
Amperex,Taylor and WE. Also liisted in Babani.

Dimensions (WHD)
incl. pins / tip
x 190 x 59 mm / x 7.48 x 2.32 inch
Information source Babani, International Radio Tube Encyclopaedia   p. 178 & 179
- - Manufacturers Literature   
Taschenbuch zum Röhren-Codex 1948/49
Universal Vade-Mecum, Electron Valves and Semiconductor Devices

vt4c_18.png 211C: Manufacturer's Literature
Emilio Ciardiello

Just Qvigstad
211C: Manufacturer's Literature
Emilio Ciardiello

More ...
Usage in Models 1= 1930??

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):1

Collection of



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